Circulation accelerator



Ami 15 192%.. a ma a. D. snsom CIRCULATION ACCELERATOR Filed Oct. 6, 1919 2 Sheets-Sheet 1 Aprifi 15 1924.

IN VEN '03:

2 Shqats-Sheet 2 B D GILSON CIRCULATION ACCELERATOR Filed Oct. 6', 1919 Patented Apr. 15, 1924.

CIRCULATION ACGELE RA EOR.

Application filed October 6, 1919. sen-s1 NO. 328,656.

To all whom 2'7? may concern:

Be it known that I, Bnn'r D. G iLsoN, a citizen of the United States, residing at Chicago, Cook County, and State of Illinois, have invented. new and useful Improve-- ments in Circulation ircce'lcra tors, of whicl the following is a specification.

This invention pertains to fluid circulating apparatus of the thermo-siphon type, such as employed for the purpose of cooling internal combustion engines, and it is particularly directed to devices fol-accelerating the flow of the fluid through such apparatus.

The object of my invention is to provide a simpleand inexpensive device for effecting the results specified. A further object is the provision of an accelerating element applicable to a anechani'sm already in use without the necessity of making radical changes in such mechanism. Another object is to provide an accelerating element, in a fluid circulating apparatus, which will insure ample circulation for its purpose, and yet will not interfere with or check the normal flow through the system, if for any reason the accelerating element becomes inoperative.

In the following description and in the appended drawings 1 have shown my device embodied in the water circulating system of a well known tractor engine, for which it was primarily designed.

In the drawings:

Fig. 1 is aside elevation of the engine and radiator embodying the invention,

Fig. 2 is a side elevation of my device removed from the engine,

Fig. 3 is a rear elevation of the accelerating element, and

Fig. 4; is a fragmentary view of the same.

Referring in the first instance to Fig. 1, the numeral 1 denotes an engine of the type specified and having a water jacket, in which the water of the circulating system becomes heated, whereupon it rises into a radiator tank 2, whence, in turn, the water sinks through a radiator 3, finally to return to the said water jacket through suitable devices such as a pipe 4-.

Between the water jacket and the radiator tank, and operatively connecting the two, is placed an elbow shaped structure 5, which is made with a curved passage 6 for the circulating fluid. The said structure 5 carries a pendent member 7, which terminates in a head 8, and the latter isperforated to receive a stud 9, on which a fan pulle 10 is rotatably fixed. A belt 11 is bent over the said pulley, and the said belt extends downward over a driving pulley 1-2 of the engine crank shaft 13. ,Through the medium of the aforelatter'is rotatable through the medium of a fixed pulley '17. The said shaft. carries, on its inner end, a propeller 18, which latter is positioned within the passage 6, and it is so shaped that it throws the circulating fluid through the said passage with great speed. In order to rotate the said propeller, an endless belt is bent over the pulley 17, and the said belt, 19, extends from the pulley and downward around the pulley 12. It is noted that the belt 19 rides on top of the belt 11, which latter in this manner becomes the rotat-ing medium of the propeller 18.

Belts will stretch and become slack in the course of time, and thus become too loose to function properly, making it necessary for the operator to tighten such belts. It is therefore essential that simple and quickly manipulated tightening means he provided, so as not to waste much valuable time shortening belts during the operating period. \Vith this in view 1 have introduced means for taking up slack in the belt, and such means may take the form indicated in the drawing, in which the stud 15 is shown to be eccentric. A slight turn of the said stud is sufiicient to tighten the belt, and the stud is then looked in position by any suitable means, such as a set screw 20. InvFigs. 2 and 4 the said shaft is shown off center horizontally, which is the middle position of adjustment. In Fig. 3, on the other hand, the shaft is shown vertically above the center of the entrance 6% to the passage 6, and indicates the maximum adjustment possible. Within the said stud is cylindrical chamber, in which is placed a bearing gland 21, and inside the said gland is placed a quantity of packing 22. A nut 23 engages the outer, threaded end of the stud 15, and this nut serves to press the gland 21 against the packing, for the purpose of preventing the circulating fluid from leaking through the Ill) hearing. The passage 23 of the said nut 23, is made large enough to allow for the eccentricity of the shaft 16, as indicated in Fig. 1. An oil or grease cup 24 is also applied for the purpose of lubricating the said bearing.

Now it is noticed that the propeller 18, seating in the entrance to the passage 6, does not occupy the entire'opening, but that a large space remains unoccupied both above and below the said. propeller, and the said unoccupied spaces, together with the spaces between the propeller blades, are suflicient to permit the normal flow through the passage, that is the flow normally caused by 'thermo-siphonal action, in case the propeller becomes inoperative by the breaking of the belt or other abnormal causes.

I claim: 1

1. The combination of the crank shaft, water jacket and upper radiator tank, of a onepiece ninety degree elbow clamped on the bosses of said water jacket and tank, a propeller bearing shaft seated in said elbow, a fan carrying stud on a pendent projection of the elbow, a pulley on said stud, a pulley on the crank shaft, a belt interconnecting the two pulleys, a pulley on the outer end of the propeller bearing shaft, and a belt interconnecting the last pulley with the crank shaft pulley, said belt riding upon and driven by the said fan belt.

2. In an internal combustion engine, in combination, a water acket, a radiator tank, a one-piece elbow combining the two, a pulley and fan carrying stud on said elbow, a propeller mounted within the elbow, a pulley on the projecting end of the propeller shaft, a pulley on the crank shaft of the engine, a belt interconnecting the last named pulley with the fan pulley, a belt hung over the first named belt and the said propeller pulley, and means for taking up slack in the latter belt.

3. In combination with an internal combustion engine having a fan, a pulley on the crankshaft, and a belt passing around said pulley and operatively connected to drive the fan; a water circulator member mounted with the engine above the fan and having a rotary impeller, a pulley connected to said impeller in vertical alinement with the first named pulley, and "a flexible driving member passing around the impeller pulley and the crank shaft pulley outside the belt thereon.

In testimony whereof I have hereunto affixed my signature.

BERT D. GILSON. 

